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tetralithium (3Z)-3-(2-{4-[(E)-2-{4-[(E)-{2,6-diamino-3-methyl-5-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}diazenyl]-2-sulfonatophenyl}ethenyl]-3-sulfonatophenyl}hydrazinylidene)-5-methyl-6-oxocyclohexa related products: